"Such individuals are an embarrassment to the vast majority of Chelsea supporters who won't tolerate them in their club".
Chelsea, working in conjunction with their away security staff, identified the individuals involved before the game, with three of the six - who had tickets for the game - stopped as they attempted to enter the Sinobo Stadium.
Asked if he had always planned to bring Hazard off the bench, Sarri replied: 'No, at the beginning of the match I wanted him on the bench because I thought that, probably, the match was really very hard.
"I don't want to talk about this because I didn't see the video, so I don't want to talk about something I don't know about the case".
Chelsea will be aiming to take a significant step towards reaching the penultimate stage of the UEFA Europa League when they lock horns with Slavia Praha at Eden Park on Thursday night.
Sarri was also asked about video footage that appeared to show Chelsea fans aiming racist abuse at former player Mohamed Salah. Probably I'd need to use him.
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Just days before Chelsea travel to Liverpool, the league leaders have issued a statement condemning the behaviour of a group believed to be fans of the west London club, describing their behaviour as "dangerous and disturbing".
Liverpool FC has alerted the police and is working with Chelsea to catch those responsible.
"We have also witnessed hateful attacks on social media".
"This behavior needs to be called out for what it is - unadulterated bigotry".
As well as juggling two quarter-final games, Chelsea are very much in the race for fourth place, which makes April a vital month for securing Champions League football for next campaign.
Despite a lack of goals, the second half provided some entertaining end-to-end football, with Slavia Prague's Ibrahima Traore stinging Kepa Arrizabalaga's palms from distance on 70 minutes and Chelsea seeing a goal ruled out for offside shortly after.